Smoke exhaust valve and fire damper actuator

Smoke exhaust valve and fire damper actuators are an indispensable and important part of the building fire protection system. They respectively undertake the functions of smoke exhaust and fire prevention. The following is a detailed answer to these two actuators:

1. Smoke exhaust valve actuator

Definition and function

The smoke exhaust valve actuator is a device used to control the opening and closing of the smoke exhaust valve. It is usually connected to the smoke exhaust system. It is used to quickly open the smoke exhaust valve when a fire occurs to discharge smoke and harmful gases from the building to ensure the smooth evacuation of personnel and fire rescue.

Working principle

The smoke exhaust valve actuator usually includes electric actuators, transmission devices and control systems.

When a fire occurs, the fire control center will send a signal to the smoke exhaust valve actuator. After receiving the signal, the electric actuator drives the transmission device to open the smoke exhaust valve quickly.

After the smoke exhaust valve is opened, smoke and harmful gases are discharged from the building through the smoke exhaust pipe, thereby reducing the temperature of the fire scene and the smoke concentration, creating favorable conditions for personnel evacuation and fire rescue.

2. Fire damper actuator

Definition and function

The fire damper actuator is a device used to control the opening and closing of the fire damper. It is usually installed in the ventilation duct or air conditioning system. It is used to automatically close the fire damper when a fire occurs, cut off the channel for the fire to spread, and thus prevent the fire from expanding.

Working principle

The fire damper actuator usually includes parts such as temperature sensing elements, transmission devices and control systems.

When the temperature in the pipe reaches the set value (such as 70°C or 280°C), the temperature sensing element will trigger the control system to activate the transmission device and close the fire damper.

After the fire damper is closed, the channel for the fire to spread can be cut off to prevent the fire from expanding, while protecting the ventilation duct and air conditioning system from damage.

Summary

The smoke exhaust damper actuator and the fire damper actuator each play an important role in the building fire protection system. They ensure the safety and stability of the building in the event of a fire through precise control and reliable operation. When selecting and using these actuators, it is necessary to make comprehensive considerations based on actual conditions and needs to ensure that they can fully play their role and meet fire protection requirements.